D defs.my
Entry 3 senses Webster, 1913

Extraction

/ĕk-străk'-shən/ · Ex·trac·tion · IPA /ɪkˈstɹækʃən/
01 n. The act of extracting, or drawing out; as, the extraction of a tooth, of a bone or an arrow from the body, of a stump from earth, of a pass…
  1. 1.
    The act of extracting, or drawing out; as, the extraction of a tooth, of a bone or an arrow from the body, of a stump from earth, of a passage from a book, of an essence or tincture.
  2. 2.
    Derivation from a stock or family; lineage; descent; birth; the stock from which one has descended.
  3. 3.
    That which is extracted; extract; essence.
    “They [books] do preserve as in a vial the purest efficacy and extraction of that living intellect that bred them.” Milton.
Phrases & compounds
The extraction of roots — The operation of finding the root of a given number or quantity.